Soft handoff for OFDM
    31.
    发明授权
    Soft handoff for OFDM 有权
    OFDM的软切换

    公开(公告)号:US07864735B2

    公开(公告)日:2011-01-04

    申请号:US12343866

    申请日:2008-12-24

    IPC分类号: H04W4/00

    摘要: The present invention relates to soft handoffs in an OFDM system. Each mobile terminal measures pilot signal strengths of transmissions from adjacent base stations. If the pilot signal strength for a base station exceeds the defined threshold, that base station is added to an active set list. Each mobile terminal notifies the base stations of their active set lists. By providing the set list to the base station controller and the servicing base station, the mobile terminal identifies the sole servicing base station or triggers a soft handoff mode when multiple base stations appear on the active set list. The soft handoff mode uses a combination of scheduling and space-time coding to affect efficient and reliable handoffs.

    摘要翻译: 本发明涉及OFDM系统中的软切换。 每个移动终端测量来自相邻基站的传输的导频信号强度。 如果基站的导频信号强度超过定义的阈值,则该基站被添加到活动集列表中。 每个移动终端向基站通知其活动集列表。 通过将设置列表提供给基站控制器和服务基站,移动终端识别唯一服务基站,或者当多个基站出现在活动集列表上时触发软切换模式。 软切换模式使用调度和时空编码的组合来影响有效和可靠的切换。

    Aspects to support LTE-A downlink hi-order MIMO
    35.
    发明授权
    Aspects to support LTE-A downlink hi-order MIMO 有权
    设计方面支持LTE-A下行高阶MIMO

    公开(公告)号:US08315225B2

    公开(公告)日:2012-11-20

    申请号:US13068836

    申请日:2009-09-21

    IPC分类号: H04W72/00

    摘要: A method of operation of a MIMO transmitter, in a cellular network supporting both legacy standard-compliant mobile terminals and next generation standard-compliant mobile terminals, the method comprising defining a matrix of resource blocks within an information channel of the cellular network, wherein each resource block corresponds to a region of subcarriers of a transmission timeslot at a given frequency subband; assigning a first set of reference signals (RSs) for the legacy standard-compliant mobile terminals to resource blocks at specific locations within the matrix to be transmitted by the MIMO transmitter, the specific locations being defined by, the legacy standard; and assigning a second set of RSs for the next-generation standard-compliant mobile terminals to other resource blocks within the matrix to be transmitted by the MIMO transmitter.

    摘要翻译: 一种在支持传统标准兼容移动终端和下一代标准兼容移动终端的蜂窝网络中的MIMO发射机的操作方法,所述方法包括定义蜂窝网络的信息信道内的资源块矩阵,其中每个 资源块对应于给定频率子带处的传输时隙的子载波的区域; 将传统标准兼容移动终端的第一组参考信号(RS)分配给由MIMO发射机发送的矩阵内的特定位置处的资源块,所述特定位置由传统标准定义; 以及将下一代标准兼容移动终端的第二组RS分配给由MIMO发射机发送的矩阵内的其他资源块。

    Uplink control signal design for wireless system
    40.
    发明授权
    Uplink control signal design for wireless system 有权
    无线系统的上行链路控制信号设计

    公开(公告)号:US08971269B2

    公开(公告)日:2015-03-03

    申请号:US13620418

    申请日:2012-09-14

    IPC分类号: H04W4/00 H04W72/04 H04W72/02

    摘要: A method for an SS to perform network entry in a multi-carrier wireless environment that has a primary carrier and at least one secondary carrier associated with a BS, the method comprising: a. sensing a carrier in an area serviced by the BS; b. determining if the carrier is a primary carrier or a secondary carrier; and c. performing the network entry if the determining establishes that the sensed carrier is a primary carrier and not a secondary carrier.

    摘要翻译: 一种SS在多载波无线环境中执行网络入口的方法,所述多载波无线环境具有主载波和与BS相关联的至少一个次载波,所述方法包括:a。 感测由BS服务的区域中的载体; b。 确定载体是主载体还是辅助载体; 和c。 如果确定确定感测到的载波是主载波而不是辅载波,则执行网络条目。